Metallic rod-packing.



J. W. STIGKLEY. METALLIC ROD PACKING. APPLIOATION FILED SEPT.11, 1912.

Patented Jan. 21, 1913.

2 BHEETSSHEBT 1.

m 6 m WM .& 4 P.

Momma J. W. STIGKLEY.

METALLIC ROD PACKING. IIIIIIIIIIIIIII D S'BDT 11, 1912.

1,050,870. Patented Jan. 21, 1913.

2 ssssssssssss 2.

UNITED STATES PATENT OFFICE.

JOSEPH W. BTIOKIEY, 0F NORFOLK, VIIiGINIA.

armature non-meme.

h m or 1mm m n Patented Jan. 21, 1913.

Appllcatlonmed September 11, 1912. 361318110. 719,824. I

self-adjusting. g

The present invention has for its ob ects among others to rovide a simplified and improved term 0 packing ofth1s general character which shall be long-lived, readily applied and applicable to any of the well known forms of cylinder heads. or stuffingbones and with the parts so constructed and i arranged that a perfectly tight joint is assured even. to the wearing out of the packing rings. I provide against lateral expansion or displacement of the packmg rings as well as an additional safeguard against leakage, the rings being confined within a retaining cup into which alsothe follower is receivable, said follower serving, when; the packing rings become worn, as a packing? member. The retaining cup is prov1ded with a plurality of annular ribs which have direct contact with the adjacent end of the F stufling-hox member to serve as additional? preventive against leakage. I employ pack- F ing rings with conical portions, SW1d rings; being received one within theother and; arranged with their apices facing the end? of thestuffing-box against which the ring finds an abutment, instead of toward the inner endas has heretofore been the custom, so that the pressures of the steam and spring are exerted against the apices' of the packing rm s.

(gther objects and aidvantages of the ill-.2 vention will hereinafter appear and novel features thereof will be particularly pointed out in the appended claims.

clearly illustrated in the accompanying drawings, which, with the numerals of reference marked thereon, form. a part of this specification, and in which Figure 1 is a longitudinal section througha stuffing-box with my improvements ap plied thereto, the shaft or rod being shown Isome soft metal gBabbitt metal or 3 e like. They are formed E inelevation. Fig. 2 is a similar view showing the position of the parts after the packing rings have become worn. Fig. 3 is a cross section on the line 33 of Fig. I, look ing in the direction of the arrows. Fig. 4

is a perspective detail of the back ring which forms an abutment for the spring. Fig. 5

is a perspective view of the follower. F1g. 6 is a perspective view of the retaining cup, Fig. 7 is a perspective view of one ofthe sectional soft metal is a similar view 0 packing ring.

Like numerals of reference indicate like parts throughout the several views.

acking rings. Fig. 8' the other soft metal Referring to the drawings, 1 designates arod or shaft, for instance a piston rod of apump or engine, to which in the present instance it has been deemed advisable to show my improved packing as applied; 2

is the stuffing-box having adjustable .con-

nection with the flange 3v of the ca 4 in the usual manner, these parts being 0- ordinary and well-known construction needing no further specific 'description and to. which no claim per se is herein made.

5 is a retaining cup, the horizontal por- .tion 6 of which has an opening for the passage "of the shaft or rod 1 and, as seen in Figs. 1 and 2, the upper or inner face of the annular flange portion of this cup is provided with the annular ribs or projections 7, seen clearly in Figs. 1, 2 and 6. The inner end wall of the stufiingbox 2 bears directly against these annular ribs or projections, as seen in Figs. 1 and 2, and when screwed up tight, the parts being of brass .or similar metal, the ribs will be forced into close contact with the adjacent face of the stuffing-box and a steam and .air-tight joint thus provided.

The packing rings which l employ are of acking material, such as in sections so as to allowthem to readily adapt themselves to the shape of the shaft or rod. and to hug tightly a rod or shaft I j -that has become worn and is not perfectly The invention, in its preferred term, is 1' cylindrical in shape. One of these rings is seen at 8 in Fig. 8. It is composed of two halves and when these two halves are placed in proper relation to form a ring, the latter is in the form of a cone, the outer tapered wall 8 of which is preferabliyat it is evident that the invention is not restricted to this precise. angle. The taper of this ring 8 extends substantially to the outer edge, although preferably leaving a comparatively small peripheral face 10 which is parallel with the shaft or rod to which the ring is applied. In Fig. 7 I show the other ring 9 which is likewise in two arts and the meeting or adjacent faces, whic aredesign'ed to overlap, are upon an incline, as shown in Figs. 7 and 8, so as to practice, theserings are placed within the: retaining cup 5, the annular flange portion. of which is of sufficient depth toreceive a portion of the vertical face 12 of the upper ring, as seen clearly in Fig. 1. These rings are placed wit-h their joints so as to breakjoints, as indicated in full and dotted lines in. Fig. 3, it being noted that the one ring is received within the other, as shown clearly in Fi 1', and'then the follower 13 is applied. This follower has its inner face tapered at an angle of 55, as seen at 14 in Fig. 1, so as to match the taper of the ring' 9. This follower has an annular flange 15 forming a shoulder 16, as seen in Figs. 1, 2 and 5, the flange portion 15 receiving the? end of a spring 17 which has a bearing spring bearing against a back ring 18, the; outer faceof which is rounded, as seen at; 19, and received in a correspondingly-com,

caved socketlorzportion 20 in'the outer end of the stufling-box. This allows of the requisite rocking movement to compensate nular ribs or for any variation in the movement of the piston rod or shaft.

In practice,

the partsare assembled by placing the Iretainingcup within the mem-i ber 4 and then placing the rings 8 and 9.

within the cup, .the outer'peripheral'fa'ces 10 and 12 of said rings being received within the flange portion of the'eup so as to be; held against outward icompression and thenthe follower 13 is placed upon the adjacentring, .the spring iappliedand the back ring 18 placed in position and then the stuffingbox 2 screwed in until the parts are properly compressed and-the inner face of the stufling-boxibears tightly against the anprojections 7 of the retaining cup. By this means, the pressure of the steam and spring being-toward the retain ingcup, the packingrings are forced ina ward against thev piston'rodfor shaft 1 and as the rings become worn, theJ are still forced 'against: the rod or shaft, ven when a the-packing ringsbecomesoworn that the follower 13- enters the: retaining cup, the? rings are still forced tightly against the rod or shaft. Fig. 2 indicates the position of the parts when the acking rings 8 and 9 have become considera ly worn and in this view it will be seen that the follower has its lower edge received within the flan e of the retaining cup and said follower Wlll be forced in close contact with the rod or shaft and this will be the case even when the packing rings have been practically worn away to nothing. It will thus be seen that I utilize the force of the steam or air and the spring to constantly force the packin rings against the piston rod or shaft and t at'the tendency is always to force them in, the rings being retained against outward movement and as soon as the tapered end of the follower enters the space within the flange of the retaining cup, it tends to more firmly compress the packing rings against the piston rod or shaft. When the packing rings become practically worn out, the follower, together with the tight joint formed by the annular ribs or projections 7 of the retaining cup bearing firmly against the end wall of the stufling-box, serves to completely prevent leakage. The pa-rts can be readily renewed or replaced and automatically addisclosed is what I at the present time conagainst the shoulder 16,- the other end of the sider preferable, it is evident that the same is sub ect to changes, variations and modifications in detail, proportion of parts, etc., without departing from the spirit of the invention or sacrificing any of its advantages. I, therefore, do not wish to restrict myself to the partlcular construction hereinbefore disclosed, but reserve the right to make such changes, variations and modifications as come properly within the scope of the protection prayed.

What is claimed as new is:

1. In metallic rod packing, a retaining cup, conical packing rings therein superimposed one upon the other, a ta ered follower receiving the adjacent pac ing ring, and a spring acting on the follower to force the same against the tapered face of the adjacent ring. l

2. In metallic rod packing, a retainin cup, conical rings received therein and hel agalnst outward movement thereby, and a follower having a conical portion receiving the adjacent ring and means acting on the follower to force the same toward said cup.

3. In metallic rod packing, a retaining cup, superimposed conical rings held therein against outward movement, and a spring pressed follower having its face adjacent saidrings conical and receiving the conical face of the adjacent ring.

Ill

'4. In metallic rod packing, a retainin cup, conical rings recelved therein and hel against outward movement, a follower having conical portion receiving the adjacent ring, and means forcing said follower against the rings in the direction of the application of the motive agent.

5. In metallic rod packing, a retaining cup, conical rings received therein and held against outward movement, a follower having a conical portion fitted to the adjacent ring, a spring pressing the follower toward the rings, and a stuffing-box member forming a tight joint with the adjacent end of the retaining cup.

6. .In metallic rod acking, a retaining cup, conical packing rmgs retained therein, a follower having a conical portion receiving the adjacent packing ring a spring acting" on the follower, and a stuiiin -box member, the retaining cup having annular projectiops for direct engagement with the end of said stuflinlgm box member to form a tight joint therewit 7. In metallic rod packing, sectional conical packing rings, means holdin them against outward lateral pressure, a ollower acting on the rings to force theminward against the rod, and means, forming an airtight joint independent of said rings.

8. In metallic rod packing, superim osed conical sectional. packmg rings, means olding them against outward lateral movement, and conical means tending to force said rings inward toward the piston rod, said means acting in the direction of the appllcation of the force of the motive agent.

Signed by me at .Washington, D. 0., this 11th day of Sept., 1912.

JOSEPH W; STIOKLEY.

Witnesses: THOMAS Dmmn'r, E. H. Bonn. 

